M923 A2 Brakes Locked On

[roders]

Hi

We have an M932 A2 BMY the brakes have locked on and air is being forced out from the front emergency gland coupling.

Has anyone experienced this and have any suggestions what it could be?


we have tried operating the spring brake override with no effect.

Thankyou

 

[98G]

Is the vent functional on the front gladhand?

 

[simp5782]

Stuck inversion valve or clogged front vent